Leeds responded through Stuart Dallas’s second of the night, which made it 3-3 on aggregate, but Marriott’s late winner sealed Derby’s place at Wembley in the final.

“The Jack Marriott one is a question I get asked. I know the fans want to see him playing,” said Lampard.

“Jack’s been really good for us this season. I just felt in the last couple of months, in terms of what I really want from Jack, what can make him the player he was tonight, is the absolute ethic to do everything as an all-round striker.

“He’s not the tallest. He’s strong in terms of stockiness, but he needs to work without the ball, to have a hunger and desire constantly.

“I said to him before the game I had a feeling. I said I know you’re upset, but I have a feeling that something’s going to come from you today.”

Lampard said his emotions after his side’s victory matched anything he had felt during his playing days.

“It means such a great deal,” Lampard said. “To get into the play-offs after such a great run and to go 1-0 down and do something that no team has ever done in the play-offs after losing the first leg at home.

“In terms of personal achievement, the feeling is as much as I’ve had in football.